DDL:date define language 数据定义语句
create drop alter
DCL:date control language 数据控制语句
grant revoke
DML:date maniplation lanuage 数据操作语句
delete update insert
create drop alter
DCL:date control language 数据控制语句
grant revoke
DML:date maniplation lanuage 数据操作语句
delete update insert
Kyle
